error for v.10.2 ZA free firewall

hi,
I use old free ZA v.10.2 with Win7-64 + Avast (I hate soft incompatibility - I tried once newer ZA version but got massive problems with browser and win system, so I got back). I have 2 questions.
1) Does this version still works properly (I mean updating malvare, etc) or it's better just use MS firewall with additional interface?
2) I can see in Event Logs next record:
"Name resolution for the name cm1.zonealarm.com timed out after none of the configured DNS servers responded." What it means and how I can fix it.
wbr
Waldi